Description: Some algorithms of variable step size LMS adaptive filtering are studied．The VS—LMS algorithm is improved．
Another new non-linear function between肛and e(／ t)is established．The theoretic analysis and computer
simulation results show that this algorithm converges more quickly than the origina1．Furthermore，better antinoise
property is exhibited under Low—SNR environment than the original one．-variable step size of a LMS daptive filtering are studied. The VS-LMS algorithm is improved. Another new non-linear function between anus and e (/ t) is established. The theoretic analysis and computer simulatio n results show that this algorithm converges mo 're quickly than the origina1. Furthermore, better antinoise property is exhibited under L ow- SNR environment than the original one. Platform: |
Size: 3072 |
Author:上将 |
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Description: 在一种变步长LMS 算法的基础上，引进动量因式，提出了一种新的改进LMS 的算法。新算法整体性能优
于变步长LMS 算法以及LMS 算法。通过理论分析，比较了新的算法和变步长LMS 算法以及LMS 算法的收敛性
和稳态性，提出了一种设想以提高新算法的稳态性。仿真试验证明了新算法的优越性以及设想的在仿真条件下的正
确性。-In a variable step size LMS algorithm, based on the introduction of momentum factor, a new improvement of LMS algorithms. The overall performance of the new algorithm is superior to variable step size LMS algorithm and LMS algorithm. Through theoretical analysis, comparing the new algorithm and variable step size LMS algorithm and LMS algorithm convergence and steady-state, and proposes a new algorithm is envisaged to enhance the steady-state nature. Simulation tests proved the superiority of the new algorithm, as well as envisaged under the conditions in the simulation is correct. Platform: |
Size: 139264 |
Author:王勇 |
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Description: 用matlab自编的的变步长LMS滤波的算法的程序，希望对大家有用-Matlab own use of variable step size LMS algorithm for filtering procedure, in the hope that useful to everybody Platform: |
Size: 1024 |
Author:王瑞玲 |
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Description: 这 里主要对LMS算法及一些改进的LMS算法（NLMS算法、变步长LMS算法、变换域LMS算法）之间的不同点进行了比较，在传统的LMS算法的基础上发 展了LMS算法的应用。另一方面又从RLS算法的分析中对其与LMS算法的不同特性进行了比较。-Here mainly on the LMS algorithm and some improvements of the LMS algorithm (NLMS algorithm, variable step size LMS algorithm, transform domain LMS algorithm) between the different points of comparison, in the traditional LMS algorithm developed on the basis of the application of the LMS algorithm. On the other hand from the analysis of RLS algorithm and LMS algorithm for its different characteristics compared. Platform: |
Size: 30720 |
Author:jj |
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Description: 若不希望用与估计输入信号矢量有关的相关矩阵来加快LMS算法的收敛速度，那么可用变步长方法来缩短其自适应收敛过程，其中一个主要的方法是归一化LMS算法（NLMS算法），变步长 的更新公式可写成
W（n+1）=w（n）+ e（n）x（n）
=w（n）+ （3.1）
式中， = e（n）x（n）表示滤波权矢量迭代更新的调整量。为了达到快速收敛的目的，必须合适的选择变步长 的值，一个可能策略是尽可能多地减少瞬时平方误差，即用瞬时平方误差作为均方误差的MSE简单估计，这也是LMS算法的基本思想。
-Want to estimate if the input signal vector and the relevant matrix to speed up the convergence rate of LMS algorithm, then the variable step size method can be used to shorten its adaptive convergence process, one of the main method is normalized LMS algorithm (NLMS algorithm) , variable step-size update formula can be written W (n+ 1) = w (n)+ e (n) x (n) = w (n)+ (3.1) where, = e (n) x (n) the right to express filter update vector iterative adjust the volume. In order to achieve the purpose of fast convergence, we must choose the appropriate value of variable step size, a possible strategy is as much as possible to reduce the instantaneous squared error, which uses the instantaneous squared error as the mean square error MSE of the simple estimate, which is the basic LMS algorithm思想. Platform: |
Size: 3072 |
Author:闫丰 |
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Description: 在信道估计中实现了变步长的lms算法，完成仿真平台-In the channel estimation to achieve a variable step size of LMS algorithm, the completion of simulation platform Platform: |
Size: 1024 |
Author:名字 |
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Description: 基于变步长LMS在干扰抵消中的应用，其中key1，2，3为不同变步长的MATLAB程序，而pinyu则是LMS在频域中的应用，-Variable Step Size LMS-based interference cancellation in the application, which key1, 2,3 for different variable step size of MATLAB procedures pinyu is LMS in frequency domain applications, Platform: |
Size: 984064 |
Author:刘成芳 |
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Description: 采用一种快速收敛变步长LMS（Least mean square ） 自适应最小均方算法matlab源程序，其中算法所做的工作是用FIR 滤波器的预测系统，对IIR系统进行预测，如果阶数越高越能逼近被预测系统。-Using a fast convergence of variable step size LMS (Least mean square) adaptive least mean square algorithm matlab source, one of algorithm is the work done by FIR prediction filter systems, prediction of IIR systems, if the higher order the more it can be prediction system approximation. Platform: |
Size: 1024 |
Author:杨思科 |
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Description: 本程序对两种固定步长和一种变步长最小均方误差算法的权值收敛进行了仿真，结果表明变步长的算法效果更优。-This programme compare LMS algorithm with VSLMS algorithm. The result indicate that the latter is better. Platform: |
Size: 1024 |
Author:何通 |
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Description: 一种改进的LMS算法及其在噪声对消中的应用。在分析传统定步长LMS算法和变步长LMS算法的基础上，提出了一种改进的变步长LMS算法。新算法利用瞬时误差绝对值三次方的指数形式和遗忘因子同时调整步长，更好的解决了收敛速度和稳态误差的矛盾-An improved LMS algorithm and its application in noise cancellation. In the analysis of the traditional fixed step and variable step size LMS algorithm based on LMS algorithm, a modified variable step size LMS algorithm. Absolute value of the new algorithm uses the instantaneous error and the form of cubic exponential forgetting factor while adjusting step, a better solution to the convergence speed and steady-state error of the contradictions Platform: |
Size: 1024 |
Author:dapeng |
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Description: 基与matlab仿真平台，编写变步长LMS自适应滤波器算法，该算法能够解决收敛速度和稳态精度的固有矛盾。-Based on Matlab simulation platform, the preparation of a variable step size LMS adaptive filter algorithm, which is able to resolve the contradictions inherent in convergence speed and steady precision. Platform: |
Size: 2048 |
Author:王玉珠 |
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Description: MATLAB实现一种新的变步长的LMS算法，即对步长因子进行了改进，将步长因子与误差因子间建立函数关系提出变步
长LMS新的算法-MATLAB implementation of a new variable step size LMS algorithm, that step factor is improved, will be established as a function of time step size and the error factor proposed variable step
The new long-LMS algorithm Platform: |
Size: 1024 |
Author:代先生 |
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Description: 描述几种常见的变步长算法，步长因子与误差之间关系的曲线。(This paper describes several common variable step size algorithms, the curves of the relationship between the step factor and the error.) Platform: |
Size: 6144 |
Author:程昱2180 |
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Search - variable step size LMS matlab